22431123032220 has 144 divisors (see below), whose sum is σ = 77764070092800. Its totient is φ = 5126926347648.

The previous prime is 22431123032209. The next prime is 22431123032257. The reversal of 22431123032220 is 2223032113422.

22431123032220 is a `hidden beast` number, since 2 + 2 + 4 + 311 + 2 + 3 + 0 + 322 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35728581 + ... + 36350979.

Almost surely, 2^{22431123032220} is an apocalyptic number.

22431123032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22431123032220 is an abundant number, since it is smaller than the sum of its proper divisors (55332947060580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22431123032220 is a wasteful number, since it uses less digits than its factorization.

22431123032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651024 (or 651019 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 22431123032220 its reverse (2223032113422), we get a palindrome (24654155145642).

The spelling of 22431123032220 in words is "twenty-two trillion, four hundred thirty-one billion, one hundred twenty-three million, thirty-two thousand, two hundred twenty".